Retooled scanToken() method

Scanner.java

private void scanToken(char character) {
        if (singleCharacterToken(character) != null) {
            addToken(singleCharacterToken(character));
            return;
        }

        if (isComparisonOperator(character)) {
            addComparisonOperatorTokenFor(character);
            return;
        }

        if (character == '/') {
            if (!isAComment()) {
                addToken(SLASH);
            }
            return;
        }

        switch (character) {
            case ' ': //God, I hate this about Java
            case '\r':
            case '\t':
                // Ignore whitespace.
                return;
            case '\n':
                line++;
                return;
        }

        if (character == '"') {
            addStringToken();
            return;
        }

        if (isDigit(character)) {
            addNumberToken();
            return;
        }

        if (isAlpha(character)) {
            addIdentifierToken();
            return;
        }

        Lox.error(line, "Unexpected character.");
    }